package dream;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class Test1 {
    public static void main(String[] args) {
        ArrayList<Integer> arrayList = new ArrayList<>();

        ArrayList<Integer> arrayList1 = null;

        List<Integer> list = new ArrayList<>();

        List<Integer> list1 = new ArrayList<>(10);
    }
}








